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EVAPORATION
397
HYDROMETER EQUIVALENTS
Liquids lighter than water
Degree,  Baum6	Specific gravity	Degree, Brix	Degree, Baum6	Specific gravity	Degree,  Brix
10	1.0000	0.00	56	0. 7527	131.43
11	0. 9929	2.86	57	0. 7487	134.39
12	0. 9859	5.71	58	0. 7447	137. 14
13	0. 9790	8.57	59	0. 7407	140. 00
14	0.9722	11.43	60	0.7368	142. 86
15	0.9655	14.29	61	0. 7330	145. 71
16	0.9589	17.14	62	0. 7292	148. 57
17	0. 9524	20.00	63	0. 7254	151.43
18	0. 9459	22.86	64	0.7216	154.29
39	0. 9396	25.71	65	0. 7179	157. 14
20	0. 9333	28.57	66	0. 7143	160.00
21	0.9272	31.43	67	0.7107	162.86
22	0.9211	34.39	68	0. 7071	165.71
23	0.9150	37.14	69	0. 7035	168.57
24	0.9091	40.00	70	0.7000	171.43
25	0. 9032	42.86	71	0. 6965	174.29
26	0. 8974	45.71	72	0.6931	177. 14
27	0.8917	48.57	73	0. 6897	180.00
28	0.8861	51.43	74	0. 6863	182.86
29	0. 8805	54.29	75	0. 6829	185. 71
30	0. 8750	57.14	76	0. 6796	188. 57
31	0. 8696	60.00	77	0. 6763	191.43
32	0. 8642	62.86	78	0. 6731	194. 29
33	0. 8589	65.71	79	0. 6699	197. 14
34	0. 8537	68.57	80	0. 6667	200.00
35	0. 8485	71.43	81	0.6635	202. 86
36	0. 8434	74.29	82	0. 6604	205. 71
37	0. 8383	77.14	83	0.6573	208. 57
38	0. 8333	80.00	84	0. 6542	211.43
39	0. 8248	82.86	85	0. 6512	214.29
40	0. 8235	85.71	86	0. 6482	217. 14
41	0.8187	88.57	87	0. 6452	220.00
42	0.8140	91.43	88	0.6422	222. 86
43	0. 8092	94.29	89	0. 6393	225. 71
44	0. 8046	97.14	90	0. 6364	228. 57
45	0. 8000	100. 00	91	0. 6335	231.43
46	0. 7955	102.86	92	0. 6306	234. 39
47	0.7910	105.71	93	0. 6278	237. 15
48	0. 7865	108.57	94	0. 6250	240. 00
49	0.7821	111.43	95	0.6222	242. 86
50	0. 7778	114.29	96	0.6195	245.71
51	0. 7735	117.14	97	0.6167	248. 57
52	0. 7692	120.00	98	0.6140	251.43
53	0. 7650	122.86	99	0.6114	254. 29
54	0. 7609	125.71	100	0.6087	257. 14
55	0. 7568	128.57			
sp. gr. Brix0
140
' Be0  -f  130' 20 B6  - 200
B6
sp. gr. =
140
400
The above formulas are based on Tagliabues' work, although the original Brix hydrometer was a sac-charometer, arbitrarily graduated (see p. 398).   Degrees Fisher are the same as degrees Brix.
Beck0 =
Cartier0 =
Gay-Lussac =
17  Be0  -  170 m
14
68
+ 13.
70
sp. gr. =
126. 1 + Cart0
100___
100 -h G. L>*
Tralles' hydrometer is graduated from 0 in water at 60F. to 100 in pure anhydrous alcohol (sp. gr. 0.79389) at 60F., the graduation being such as to give percentage of alcohol by volume. Gay-Lussac's original hydrometer was apparently also an alcoholometer. Southworth's hydrometer (at one time a legal standard in New York) is an alcoholometer with its 0 at proof, and reading percentages above and below proof.
Ballings' hydrometer; sp. gr. = 7i^r~r~~
JiUU    "1"   "
Baurn6's original hydrometer for liquids lighter than water was based on a zero point given by 10 parts of salt in 90 parts of water and 10 for pure water, the hydrometer stem then being divided in equal divisions. The 15 point on the "heavier than water" instrument is supposed to be the specific
gravity of a solution of 15 parts salt in 85 parts of water infringement of Baume's.
Cartiers' hydrometer was probably only an